Nitride Compounds: Property Anomalies Near Structural Instabilities
氮化物:接近结构不稳定的性质异常
基本信息
- 批准号:1309490
- 负责人:
- 金额:$ 29.95万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2013
- 资助国家:美国
- 起止时间:2013-08-01 至 2017-07-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
NON-TECHNICAL DESCRIPTION: This project is developing a new type of material consisting of a mixture of two different materials that are forced together. Naturally these two materials would not mix; however, if mixed artificially, the mixture exhibits unique properties because a small external stimulus can lead to a large change in the material structure. The unique properties anticipated for this material include a strong deformation when applying a voltage or a magnetic field. For example such a material is useful for building a new type of frequency filter, which would increase the data rate of mobile devices by ten to hundred times. These new properties may facilitate a whole range of transformative applications, including, for example, magnetically driven micro-switches for biomedical implants, emergency valves in nuclear power plants that operate without any external power source or communication pathway, tough and resilient coatings that remain functional despite frequent temperature cycling (for possible application in high-temperature fuel-efficient jet engines).TECHNICAL DETAILS: This project is developing an understanding of structural instabilities in ternary nitrides ABN where AN and BN form different equilibrium crystal structures. The key idea is that single-phase solid solutions of such ternaries with an intermediate composition exhibit a structural instability that leads to anomalous physical properties, including a reversible plastic deformation or a diverging piezoelectric response. Ternary nitride layers are deposited by reactive sputtering. Epitaxial constraints, composition variations, and ion-surface interactions are used to control the emerging phases, microstructure, texture, strain, and possible phase separation. The structural instabilities of single-phase solid-solution ternary nitrides at elevated temperature and pressure are studied to determine the structure-strain-energy landscape, using in situ x-ray diffraction, Raman and infrared spectroscopies. Emerging anomalous properties are measured and an understanding of how the structural instability leads to a reversible plastic deformation, an anisotropic effective Poisson's ratio, a divergence in the piezoelectric response, a magneto-mechanical coupling, and a reversible stress-induced shear transformation are developed. The project includes training of graduate and undergraduate students in state-of-the-art materials synthesis and characterization, as well as involvement in major outreach efforts to encourage girls to consider a career in science and engineering.
非技术描述:该项目正在开发一种新型材料,由两种不同材料的混合物组成。 自然地,这两种材料不会混合;然而,如果人工混合,则混合物表现出独特的性质,因为微小的外部刺激可以导致材料结构的巨大变化。这种材料的独特性能包括在施加电压或磁场时的强烈变形。例如,这种材料可用于构建新型频率滤波器,这将使移动的设备的数据速率增加十到一百倍。这些新特性可能有助于一系列变革性应用,例如,包括用于生物医学植入物的磁驱动微型开关、在没有任何外部电源或通信路径的情况下运行的核电站中的紧急阀、在频繁的温度循环下仍保持功能的坚韧和弹性涂层(用于高温燃料高效喷气发动机的可能应用)。技术专长:该项目正在发展对三元氮化物ABN中结构不稳定性的理解,其中AN和BN形成不同的平衡晶体结构。关键的想法是,具有中间组合物的这种三元化合物的单相固溶体表现出结构不稳定性,导致异常的物理性质,包括可逆的塑性变形或发散的压电响应。三元氮化物层通过反应溅射沉积。外延约束,成分变化,和离子表面相互作用被用来控制新兴的阶段,微观结构,纹理,应变,和可能的相分离。利用原位X射线衍射、拉曼和红外光谱研究了高温高压下单相固溶体三元氮化物的结构不稳定性,确定了结构-应变-能谱。新兴的异常性能的测量和理解如何结构的不稳定性导致可逆的塑性变形,各向异性的有效泊松比,在压电响应的发散,磁-机械耦合,和可逆的应力诱导剪切变换的开发。该项目包括对研究生和本科生进行最新材料合成和表征方面的培训,以及参与重大的外联工作,以鼓励女孩考虑从事科学和工程职业。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Daniel Gall其他文献
NiAl as a Potential Material for Liner- and Barrier-Free Interconnect in Ultrasmall Technology Node
NiAl 作为超小型技术节点中无衬里和无障碍互连的潜在材料
- DOI:
10.1063/1.5049620 - 发表时间:
2018 - 期刊:
- 影响因子:0
- 作者:
Linghan Chen;Daisuke Ando;Yuji Sutou;Daniel Gall;Junichi Koike - 通讯作者:
Junichi Koike
Epitaxial TiCemsubx/sub/em(001) layers: Phase formation and physical properties vs C-to-Ti ratio
- DOI:
10.1016/j.actamat.2022.117643 - 发表时间:
2022-03-01 - 期刊:
- 影响因子:9.300
- 作者:
Peijiao Fang;C.P. Mulligan;Ru Jia;Jian Shi;S.V. Khare;Daniel Gall - 通讯作者:
Daniel Gall
CuTi as Potential Liner- and Barrier-Free Interconnect Conductor
CuTi 作为潜在的无衬里和无障碍互连导体
- DOI:
- 发表时间:
2024 - 期刊:
- 影响因子:3.1
- 作者:
Minghua Zhang;Daniel Gall - 通讯作者:
Daniel Gall
An Adaptable Implementation of ACT-R with Refraction in Constraint Handling Rules
约束处理规则中带有折射的 ACT-R 的适应性实现
- DOI:
- 发表时间:
2015 - 期刊:
- 影响因子:0
- 作者:
Daniel Gall - 通讯作者:
Daniel Gall
Mechanical properties of compositionally modulated epitaxial VN(001)/VC(001) films
成分调制外延VN(001)/VC(001)薄膜的力学性能
- DOI:
10.1016/j.actamat.2025.121135 - 发表时间:
2025-08-01 - 期刊:
- 影响因子:9.300
- 作者:
Moishe Y.E. Azoff-Slifstein;Anshuman Thakral;Sadiq S. Nishat;Md. Rafiqul Islam;Patrick E. Hopkins;Daniel Gall - 通讯作者:
Daniel Gall
Daniel Gall的其他文献
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{{ truncateString('Daniel Gall', 18)}}的其他基金
Collaborative Research: FuSe: Interconnects with Co-Designed Materials, Topology, and Wire Architecture
合作研究:FuSe:与共同设计的材料、拓扑和线路架构互连
- 批准号:
2328906 - 财政年份:2023
- 资助金额:
$ 29.95万 - 项目类别:
Continuing Grant
E2CDA: Type I: Collaborative Research: Interconnects Beyond Cu
E2CDA:I 类:协作研究:铜以外的互连
- 批准号:
1740271 - 财政年份:2017
- 资助金额:
$ 29.95万 - 项目类别:
Continuing Grant
Metal-insulator Transitions in 2D and 3D Refractory Nitrides
2D 和 3D 难熔氮化物中的金属-绝缘体转变
- 批准号:
1712752 - 财政年份:2017
- 资助金额:
$ 29.95万 - 项目类别:
Continuing Grant
DMREF/Collaborative Research: Nitride Discovery - Creating the Knowledge Base for Hard Coating Synthesis
DMREF/合作研究:氮化物发现 - 创建硬涂层合成知识库
- 批准号:
1629230 - 财政年份:2016
- 资助金额:
$ 29.95万 - 项目类别:
Standard Grant
Hard Coatings: Toughness Enhancement through Responsive Phase Change
硬质涂层:通过响应相变增强韧性
- 批准号:
1537984 - 财政年份:2015
- 资助金额:
$ 29.95万 - 项目类别:
Standard Grant
DMREF/Collaborative Research: Nitride Discovery - Creating the Knowledge Base for Hard Coating Design
DMREF/协作研究:氮化物发现 - 创建硬质涂层设计知识库
- 批准号:
1234872 - 财政年份:2012
- 资助金额:
$ 29.95万 - 项目类别:
Standard Grant
Adaptive High-Temperature Lubrication through Nanopore Channels
通过纳米孔通道进行自适应高温润滑
- 批准号:
1031201 - 财政年份:2010
- 资助金额:
$ 29.95万 - 项目类别:
Standard Grant
Self-Lubricating Nanoporous Hard Coatings
自润滑纳米孔硬质涂层
- 批准号:
0653843 - 财政年份:2007
- 资助金额:
$ 29.95万 - 项目类别:
Standard Grant
CAREER: Nanostructure Growth from the Vapor Phase
职业:气相纳米结构的生长
- 批准号:
0645312 - 财政年份:2007
- 资助金额:
$ 29.95万 - 项目类别:
Continuing Grant
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